Zappos CEO Tony Hsieh officiated the wedding of 2 employees in front of staff and his pet alpacas

From a makeshift stage in downtown Las Vegas’ Airstream trailer park, Zappos CEO Tony Hsieh officiated the wedding of two of his employees, in front of a small crowd of family, friends, and Hsieh’s two pet alpacas.

Hsieh made Feb. 29, Leap Day, a holiday at the online retailer, encouraging his 1,600 employees to use the once-every-four-years opportunity to cross an item off their bucket list.

This was Hsieh’s third time officiating a wedding between two of his employees.

This one was held in the Airstream park where Hsieh lives with 23 other residents. It’s part of the Downtown Project, a revitalization of downtown Las Vegas that Hsieh started in 2010 with $350 million of his own money.